Oiling system for engines.



G. W. FAIRPIELD. OILING SYSTEM FOR ENGINES. I APPLICATION FILED DBO. 26, 1908. 955,062.

Patented Apr. 12, 1910 fizz. Q 10 24 Ill WITNESSES fiaw. I

INVEN/OR 5 Geafye/[lZa'zfileZd BY W W ATTORNE rs UNITED STATES PATENT onnion.

enonen WASHINGION re nrrnnn, or THE UNITED s'rarns NAVY.

OILING srs'rnmiron nnemns.

I Specification of'Lettersratcnt. Application filed December 26, 1908. Serial No.- 469,204.

Patented Apr. 12, 1910.

This invention relatesv to oiling systemsfor engines.

The object of the invention is to provide improved means for automatically oiling the wrist-pin and crank-pin bearings of an engine.

The invention consists in the construction and combination of parts, to be more fully.

described hereinafter and particularly set forth in the claims.

Reference is to be had to the accompanying drawings formin a part of this specification, in which simi ar characters of reference indicate corresponding parts in both views, and in which-- Figure 1 is a vertical section taken through a convenient form of internal combustion engine, showing my invention aplied thereto; Fig. 2 is a section taken on the iine 2-2 in Fig. 1; and Fig. 3 is a detail view partly in section, showing the check valve. v

In said drawings, the engine comprises a cylinder 1 havin a water-jacket 2 surrounding said cy inder. Said cylinder is bolted at the bottom to the upper face of a crank-pit 4. The lower portion 5 of the crank-pit 4 may be a separate member and bolted to the upper portion 4. Said bottom part5 may be semi-circular in cross section, and forms the reservoir for a bath of oil, which is to be used in oiling thebearings of the engine. A hollow piston 8 is-mounted to recipro-. cate within the cylinder 1, and has secured thereon 'a wrist-pin 9. A sleeve 10 surrounds said wrist-pin 9, and is provided Y with apertures 12 and 14, on opposite sides of the diameter. Aconnecting rod 15 is formed at its 11 per end16 with a bearing 17 adapted to t the exterior of the sleeve 10. An oil receptacle 20 may be formed integral with the 1 per endof the connect ing rod and provi ed with a central passage 21, the outer end of which is closed by a screw-plug 22; and its innerend registers with the aperture 12 in the. sleeve 10.

of which the Communicating with one side of the oil receptaele 20 is a screwthreaded plug or.

nipple 25. Said oil receptacle. may bemade of a separable casting and attached to the upper end of the connecting rod 15 if desired.

A pipe 27 is connected at its upper end to the plug 25, and extends around the end 16 of the connecting rod and along said connectin rod to its lower end. Said pipe 27 is hel in position on-said connecting rod 'bymeans of clips 28.

A checkalve 30 is connected to the pipe 27 at its lower end, and a curved pipe 31 extends from the lower end of the checkvalve 30, and thence under the lower end 32 of the connecting rod 15. The outer end of the pipe 31 is flared at 34. Said pipe is supported in a bracket 35 secured to the lower end 32' of the connecting rod 15.

The connecting rod 15 is journaled about the crank-pin -36 of the driven shaft 37. The connecting rod 15 is provided with a longitudinal passage 38 therein, which connects the aperture 14 with the crank pin bearin 32. i

The ath-of oil within the bottom member 5 of the crank-pit is deep enough to allow the end 34 of the oilin pipe to be immersed therein when the era is rotated- The oil is forced throu h. the flared 0 en end 34, and i the curve check-valve 30, and then through the ipe 27 to the oil receptacle 20 at the top or the connecting rod. The oil then lubricates the wrist-pin bearing and flows through. the aperture 14 and the passage 38 to the crankpin bearing below, and thence out into the crank-pit. oil is provided for the wrist-pin and crankpin bearings.

Having thus described my iIiveixtiom-I Thus a continuous circulation of oiling system, the combination portion 31, t rough the with a wrist pin bearing-and a crank pin bearing, of a hollow rod connecting the wrist pinand crank pin and having its bore in communication with said pins, an oilcu on the upper end of the connectin rod an communicating with the wrist in, a pipe secured to the connecting" rod" an having its upper end connected Wlhh the oil cup, the pipe havin 'a .flared' lower end extending around thedower endof the said connecting rod and adapted to be immersed in oil as the crank pin is rotated, and a check valve in said pipe. 7 2. In an oiling system, the combination with a piston having a .wrist pin, and a driven shaft having a crank pin, of a hollow rod connecting the wrist and crank pins and having its bore in communication with said pins, an oil cup on the upper end of the connecting rod and communicating with the wrist pin, a pipe secured to the connecting rod and having its upper end connected with the oil cup, a check valve in the lower end of the pip and a curved pipe secured to the check va ve and connecting rod and having a flared end adapted to be immersed 15 in oil as the crank shaft is rotated.

In witness whereof I have signed my, name to this specification in the presence of two subscribing witnesses.

GEORGE WASHINGTON FAIRFIELD. 

